Boiler will not start at all; display is blank and no lights are on.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Safety: Only work on electrical components if you are comfortable and qualified. Turn off power at the breaker before opening covers.
- Check breaker: Verify the boiler's circuit breaker is on and has not tripped. Reset if necessary.
- Inspect service switch: Ensure the boiler's local disconnect or service switch is on and functional.
- Check internal fuse: Some IBC boilers have an internal fuse on the control board. With power off, inspect and replace only with the same type and rating if blown.
If power is present at the terminals but the display remains dead, the control board or display module may have failed and should be replaced by a technician.
Repair Difficulty
Required Part
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